GH: trouble opening after firing, your help is requested

[Pa SxS]

I'll verify that some Parkers had problems with the rim cuts plus tight chambers. You should notice that the gun is hard to close on these shells. I do know that some manufacturers shells have different rim profiles. Many modern trap guns have trouble ejecting steel base shells.

If it happens often enough, try dry firing on a snap cap and see if you can get it to reproduce

[edgarspencer]

If it's a gummy hammer, not rebounding, the spring inside the snap cap is just going to push the hammer back. Not sure it would tell you anything.